I purchased the EM385 to replace my old power supply for ECU programming and showroom vehicle display mode. So far it has performed flawlessly. Programming power mode holds rock‑stable voltage even under high load. The forced‑start 400A function helps me for quick engine start‑up after module coding. I also like the adjustable separate DC power supply, it comes handy when testing various automotive electrical accessories. Cables feel heavy‑duty pure copper, cooling fan keeps the unit from overheating during continuous operation. Operation is straightforward via touchscreen. The printed manual is clear and easy to follow. Worth every dollar for workshop daily use.

Very rugged and solid power supply. I use it mainly for bench flashing and key programming on the bench. The DC output is clean with no dangerous voltage spikes.

If you are using ODIS for long diagnostic sessions or adapting dual-clutch transmissions, you absolutely need a power supply. I was looking at a Midtronics unit but couldn’t justify the crazy cost. The EM385 handles everything I throw at it perfectly. The digital display is bright, clear, and updates the amperage draw in real-time so you know exactly what the car is doing. Highly recommended for independent shops.

This tool is better than most of the programming on the market, it’s very compact, it provides a very stable power supply, I sometimes have to do several hours of good diagnostic work and it’s all stable and has helped me tremendously!

The device works well and I would consider purchasing the diagnostic cart if I could!

I bought it because it supports lithium batteries! Multi-stage smart charging mode allows you to charge optimally. It makes me happy that it can provide me with a stable power supply when I do ECU programming. I will continue to see how it works. And come back with feedback on the results

I’ve been using it for a while now and I can genuinely say—it’s a good power inverter. It supports both Lithium Iron Phosphate and Nickel Cobalt Manganese Lithium batteries, which is a huge plus for me. I had trouble with compatibility on older chargers, but this one just works flawlessly. What I love most is the adjustable output. Being able to fine-tune the voltage and current gives me so much more control, and the multi-stage smart charging mode ensures my batteries are charged efficiently without overheating or overcharging. The Vehicle Display Mode is another great feature—it keeps power running without interruptions and even auto-restarts if power is lost. That’s been incredibly helpful when powering diagnostic tools in the garage. The 4.3-inch touchscreen is clear and responsive, and the adjustable brightness is a thoughtful touch—especially useful in different lighting environments. Also, the build quality is top-notch. The 2-meter pure copper cable feels premium and reliable, and the IP21S protection rating gives me peace of mind when using it in various settings. Overall, this is one of the smartest and most well-built chargers I’ve used. Highly recommend it to anyone who values safety, flexibility, and quality in their tools!

AUTOOL EM385 Auto Power Inverter ECU Programming

I have an EM365, which I bought three years ago. It’s time to change to a new version. The EM385 is beyond my expectation. It’s perfect. In addition to the increased functions, the quality is also very good. Worth buying!!!

Quickly restores battery performance by addressing issues such as aging batteries that fail to charge, severe power loss, and prolonged vehicle inactivity, ensuring optimal battery condition.